Summer 2019

Spectral HDX II: Local to Global

Thursday, Jul. 11, 2019 3:00 pm4:00 pm PDT

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Yotam Dikstein (Weizmann Institute of Science)

In this lecture we will prove Oppenheim's trickling-down theorem, which says that local spectral expansion in the links implies global expansion of the underlying graph. This is a demonstration of Garland's local to global method.

PDF icon Spectral HDX II: Local to Global Notes205.16 KB